Weather strip

ABSTRACT

A weather strip comprising an extruded body having straight sections and a corner section curving therebetween is disclosed. The extruded body comprises an attachment portion and a hollow sealing portion integrally formed by extrusion molding. The attachment portion is attached to a part of an automobile and the sealing portion is connected to the attachment portion at both ends. The weather strip comprises: an incision slit made on the outer periphery of the sealing portion in the corner section; an incision edge formed on the sealing portion along the incision slit, the incision edge being spread out toward the outer periphery of the corner section with the attachment portion and sealing portion being curved along a corner shape of the part of the automobile; and a molded part formed at least in the vicinity of the incision edge on the back side of the sealing portion in the corner section.

BACKGROUND OF THE INVENTION

[0001] 1. Field of the Invention

[0002] This invention relates to a weather strip having a curved cornersection. Examples of such a weather strip including an opening trimattach to an opening peripheral edge of an automobile body. The openingis open and closed with a panel such as a side door panel, a hatchbackdoor panel, a trunk panel, a quarter window panel and a sliding roof ofthe automobile. The weather strip is attached to one of such openingperipheral edge and open and closed panels.

[0003] 2. Description of Related Art

[0004] According to the first conventional weather strip as shown inFIG. 23, an opening trim (weather strip) 51 is attached to a flange 2 ofan opening peripheral edge of an automobile body 1, which seals a gapbetween the body 1 and a door panel 3 when the door panel 3 is closed.The opening trim 51 is mainly composed of an extruded product 52, asshown in FIGS. 24 and 25. The extruded product 52 is formed by commonextrusion from a solid rubber, which forms an attachment portion 53 anda lip portion 55, and a sponge rubber, which forms a hollow(loop-shaped) sealing portion 54. The attachment portion 53 has a metalreinforcing insert 56 embedded therein. The sealing portion 54 isconnected to the attachment portion 53 at both ends of the loop.

[0005] Since the opening trim 51 is required to be curved along a cornerof the door opening peripheral edge, it has a corner section C whichcurves between straight sections S, S. In order to form the cornersection C where this curved shape is maintained, the sealing portion 54in the corner section C is first cut off remaining its inner peripheralpart 54 a, as shown in FIG. 24. Next, the extruded product 52 is set ina molding apparatus (not shown) with being curved at the corner sectionC, and a sponge rubber material is injected into the cut off part of thesealing portion 54, thereby forming a molded part 57, as shown in FIG.25. At this time, the molded part 57 is connected to the remaining innerperipheral part 54 a. In order to expand the sealing area of the cornersection C toward its outer periphery according to the corner shape ofthe door panel 3, the molded part 57 is formed so as to project towardthe outer periphery of the corner section C. In FIG. 25, cross-hatchinglines are shown only to make the range of the molded part 57 clear.

[0006] However, since the sealing portion 54 in the corner section C isalmost cut off and replaced by the molded part 57, the range of themolded part 57 becomes large, which brings a problem in the appearanceand durability of the resulting opening trim 51.

[0007] Namely, even if the same kind of sponge rubber material is usedfor the sealing portion 54 of the extruded product 52 and the sealingportion of the molded part 57, they are different from each other inluster on their surfaces due to the difference in their forming methodand a slight difference in their material and expansion ratio, and aborderline 58 is seen between them, which impairs the appearance of thecorner section C. Furthermore, since the sealing portion 54 of theextruded product 52 and the sealing portion of the molded part 57 aredifferent from each other in their state of deterioration, which isbrought by the contact with the door panel 3, their difference in lusteron their surfaces becomes greater with the passage of time.

[0008] In addition, the molded part 57 is formed from a molding materialwhose composition shows a good fluidity in a cavity, so the sealingportion of the resulting molded part 57 is rather soft. As a result,there also is a problem that the sealing portion of the molded part 57is inferior to the sealing portion 54 of the extruded product 52 in thedurability.

[0009] According to the second conventional weather strip as shown inFIGS. 30 to 32, an opening trim 151 is attached to a flange 102 of anopening peripheral edge of an automobile body 101, which seals a gapbetween the body 101 and a door panel 103 when the door panel 103 isclosed. The opening trim 151 is mainly composed of an extruded rubberproduct 152 except for a molded part. The extruded rubber product 152 isformed by common extrusion from a solid rubber, which forms anattachment portion 153 and a lip portion 155, and a sponge rubber, whichforms a hollow sealing portion 154. The attachment portion 153 has ametal reinforcing insert 156 having a U-shaped cross-section. Theattachment portion 153 has a cover layer 161 for surface decoration,which extends from the boundary with the sealing portion 154 of theattachment portion 153 to the back side of the lip portion 155 via itstip edge. The cover layer 161 may be a cloth, a synthetic resin seat ora molded material from a coloring resin.

[0010] At a corner section 152 a of the extruded rubber product 152, amolded part 157, which has a curved configuration and has a projectingpart extending toward the outer peripheral side over the outerperipheral outline of the attachment portion 153 in accordance with thecorner shape of the door panel 103, is provided. In order to form themolded part 157, the sealing portion 154 in the corner section 152 a isfirst cut off remaining its inner and outer peripheral parts 154 a and154 b. These parts 154 a and 154 b form inner and outer peripheries ofthe extruded rubber product 152 when the product 152 is curved,respectively. Next, the extruded rubber product 152 is set in a metalmold with being curved to accord with the corner shape of the door panel103, and a sponge rubber is injected into the cut off part of thesealing portion 154, thereby forming a molded part 157.

[0011] However, once the extruded rubber product 152 is removed from themold after the molded part 157 is formed as shown in FIG. 33, the cornersection 152 a, which has been curved until then, almost recovers itsstraight shape by the shape recovery force of the insert 156 as shown inFIG. 34. This requires operators who assembles the opening trim 151 ontoan automobile body to curve the corner section 152 a again with theirhands so as it to accord with the corner shape of the door panel 103,which is bothersome.

[0012] Moreover, when the corner section 152 a recovers its straightshape, hems 157 a on the both sides of the projecting part of the moldedpart 157 are loosened, thereby transforming the projecting part intowavy shape. If a long period of time passes with the projecting partbeing transformed into wavy shape, the wavy shape remains in theprojecting part, which deteriorates a sealing ability and appearance ofthe projecting part.

[0013] Furthermore, since the molded part 157 is formed from a spongerubber, a heated metal mold is used to vulcanize the rubber. To preventthe heat from the heated metal mold from melting the surface of thecover layer 161, the remaining inner peripheral part 154 a of thesealing portion 154, which is connected with the molded part 157, isrequired to be large so as to be used as a heat insulator for preventingheat transfer from the heated metal mold to the surface of the coverlayer 161. For this purpose, the boundary where the inner peripheralpart 154 a connects with the molded part 157 is easily seen fromoutside, which impairs the appearance.

[0014] Furthermore, since the projecting part of the molded part 157ends in a free edge, it is easy to be turned over or swayed by the openand closed of the door panel or its aged deterioration, whichdeteriorates a sealing ability and appearance of the projecting part.

SUMMARY OF THE INVENTION

[0015] It is, therefore, an object of this invention to provide aweather strip which can provide an uniform luster on its surface bymaking an extruded sealing portion to appear on its surface as much aspossible even in a corner section and which can hardly make a borderlinebetween an extruded part and a molded part to see, thereby improving theappearance. Furthermore, it is another object of this invention toprovide a weather strip which can improve the durability of a sealingportion in a corner section.

[0016] It is further object of this invention to provide a weather stripwhich can improve an assembling ability onto an automobile body, asealing ability and an appearance by preventing a shape recovery of acurved corner section.

[0017] At first, the following measures are taken to attain the aboveobjects.

[0018] The first invention provides a weather strip comprising anextruded body having straight sections and a corner section curvingtherebetween, the extruded body comprising an attachment portion and ahollow sealing portion integrally formed by an extrusion molding, theattachment portion being attached to a part of an automobile and thesealing portion being connected to the attachment portion at both ends,wherein the weather strip comprises: an incision slit made on the outerperiphery of the sealing portion in the corner section; an incision edgeformed on the sealing portion along the incision slit, the incision edgebeing spread out toward the outer periphery of the corner section withthe attachment portion and sealing portion being curved along a cornershape of the part of the automobile; and a molded part formed at leastin the vicinity of the incision edge on the back side of the sealingportion in the corner section.

[0019] The second invention provides a weather strip comprising anextruded body having straight sections and a corner section curvingtherebetween, the extruded body comprising an attachment portion and ahollow sealing portion integrally formed by an extrusion molding, theattachment portion being attached to a part of an automobile and thesealing portion being connected to the attachment portion at both ends,wherein the weather strip comprises: a cutout long hole made by cuttingout at least a part of the sealing portion which is on the outerperiphery of the corner section and not seen from the front side; acutout edge formed on the sealing portion along the cutout long hole,the attachment portion and sealing portion being curved along a cornershape of the part of the automobile; and a molded part formed at leastin the vicinity of the cutout edge on the back side of the sealingportion in the corner section and in a place which projects from thecutout edge toward the outer periphery of the corner section.

[0020] The third invention provides a weather strip comprising anextruded body having straight sections and a corner section curvingtherebetween, the extruded body comprising an attachment portion and alip-shaped sealing portion integrally formed by an extrusion molding,the attachment portion being attached to a part of an automobile and thesealing portion being connected to the attachment portion at one endwith the other end thereof being free, wherein the weather stripcomprises: a free edge formed by locating the other end of the, sealingportion on the outer periphery of the corner section; at least one cutmade in the sealing portion from the free edge toward the innerperiphery of the corner section, the free edge being spread out towardthe outer periphery of the corner section with the attachment portionand sealing portion being curved along a corner shape of the part of theautomobile; and a molded part formed at least in the vicinity of the feeedge on the back side of the sealing portion in the corner section andinside the cut which is expanded by the curved transformation of thesealing portion.

[0021] A weather strip according to each of the above describedinventions can provide an uniform luster on its surface by making anextruded sealing portion to appear on its surface as much as possibleeven in a corner section. The weather strip can hardly make a borderlinebetween an extruded part and a molded part to see, thereby improving theappearance. Furthermore, the durability of a sealing portion in a cornersection can also be improved.

[0022] The incision slit or cutout long hole may be provided within therange of the corner section, or it may reach the straight sections overthe corner section.

[0023] It is preferable that at least one cut is made in the sealingportion from the incision edge or cutout edge toward the inner peripheryof the corner section, and that the molded part is further formed insidethe cut which is expanded by the curved transformation of the sealingportion.

[0024] The cut may be made in the sealing portion in the vicinity ofeach boundary between the corner section and the straight sections, orit may be made in the sealing portion in the middle of the cornersection.

[0025] It is preferable that each end of the incision slit or cutoutlong hole undergoes a rounding finish. It is also preferable that theend of the cut undergoes a rounding finish. This is because stressconcentration in each end can be improved by such a finish. For example,a round hole may be formed at an end of a cut or an incision slit. Eachend of a cutout long hole may form a semicircle.

[0026] In a manner, the molded part is not formed over to project fromthe spread incision edge or free edge toward the outer periphery of thecorner section. In another manner, the molded part is further formed ina place which projects from the spread incision edge or free edge towardthe outer periphery of the corner section.

[0027] The former manner is suitably employed when spreading out theincision edge or free edge is sufficient to expand the sealing area ofthe corner section toward its outer periphery, and it has the advantageof being able to hardly show the molded part. The latter manner issuitably employed when spreading out the incision edge or free edge isinsufficient to expand the sealing area of the corner section toward itsouter periphery. Although a little of the molded part projecting fromthe incision edge or free edge can be seen from outside according to thelatter manner, the majority which can be seen from outside besides theslight molded part is the extruded sealing portion, so that theappearance of the resulting weather strip is hardly impaired. Likewise,although a little of the molded part projecting from the cutout edge canbe seen from outside according to the second invention, the majoritywhich can be seen from outside besides the slight molded part is theextruded sealing portion, so that the appearance of the resultingweather strip is hardly impaired.

[0028] Moreover, in each manner, the molded part may be formed on theentire back side of the sealing portion in the corner section, or it maybe formed only in the vicinity of the incision edge, free edge or cutoutedge on the back side of the sealing portion in the corner section.

[0029] It is preferable that at least one rib is integrally formed onthe back side of the molded part, extending in the direction where thecorner section curves along. This is because the rib reinforces therigidity of the molded part, and serves to maintain the curved shape ofthe corner section.

[0030] The molded part is not limited by its molding method such as acasting, an injection molding and a transfer molding. Examples of theflowing direction of a molding material for the molded part include thefollowing manners (a) and (b):

[0031] (a) A manner wherein the molded part is formed by injecting amolding material into a region in the vicinity of the outer surface ofthe attachment portion which faces the back side of the incision edge,free edge or cutout edge in the center of the corner section so as it toflow along the back side of the sealing portion from the inner peripherytoward the outer periphery of the corner section; and

[0032] (b) A manner wherein the molded part is formed by injecting amolding material into a region in the vicinity of the back side of theincision edge, free edge or cutout edge in the center of the cornersection so as it to flow along the back side of the sealing portion fromthe outer periphery toward the inner periphery of the corner section.

[0033] In each of manners (a) and (b), it is possible to set the moldingmaterial to reach final positions on the outer periphery of the cornersection in the vicinity of each boundary between the corner section andstraight sections. It is also possible to provide a tab on the outerperiphery of each final position so as to prevent the air fromremaining.

[0034] Although the attachment portion and sealing portion of theextruded body are preferably formed from a rubber, a thermoplasticelastomer also may be used. The molded part may be formed from a rubberor a thermoplastic elastomer.

[0035] The forth invention provides a weather strip comprising anextruded body having straight sections and a corner section curvingtherebetween, the extruded body comprising an attachment portion and asealing portion integrally formed by an extrusion molding, theattachment portion being attached to a part of an automobile, thesealing portion sealing a gap between an opening peripheral edge of theautomobile and an open and closed panel, the sealing portion being cutoff in a curved corner section, and a curved molded part being formed inplace of the cut off part, wherein the molded part is formed from a softthermoplastic elastomer (TPE), and a recovery preventing portion isformed on the attachment portion by an injection molding from a hardresin, the recovery preventing portion extending in the peripheraldirection of the corner section.

[0036] A weather strip according to the forth invention can improve anassembling ability onto an automobile, a sealing ability and anappearance by preventing a shape recovery of a curved corner section.

[0037] It is preferable that the molded part comprises a projecting partextending toward the outer peripheral side over the outer peripheraloutline of the attachment portion, and a belt-shaped bridge connectingthe outer edge of the projecting part and the attachment portion. Such aconstruction prevents the projecting part of the molded part fromturning over or swaying by the open and closed of the door panel or itsaged deterioration, thereby improving the sealing ability andappearance.

[0038] Although the region on the attachment portion where the recoverypreventing portion is formed is not specifically limited, it iseffective in preventing recovery to form the recovery preventing portionto have a width parallel to a sidewall of the attachment portion. Forinstance, if the attachment portion has a U-shaped cross-section, it ispossible to form the recovery preventing portion on the inner surface orouter surface (including a surface which is appeared outside by the cutoff of the sealing portion) of the U shape.

[0039] Further objects of this invention will become evident upon anunderstanding of the illustrative embodiments described below. Variousadvantages not specifically referred to herein but within the scope ofthe instant invention will occur to one skilled in the art upon practiceof the presently disclosed invention. The following examples andembodiments are illustrative and not seen to limit the scope of theinvention.

BRIEF DESCRIPTION OF THE DRAWINGS

[0040]FIG. 1 is a front view showing an opening trim of the firstembodiment seen from its front side (especially, the part shown by anarrow I in FIG. 23);

[0041]FIG. 2 is a perspective view of the same opening trim seen fromits back side;

[0042]FIG. 3 is a sectional view taken along the line III-III of FIG. 1:

[0043]FIG. 4 is a perspective view showing the same opening trim seenfrom the outer peripheral side of its sealing portion in which anincision slit and cuts are made;

[0044]FIG. 5 is a sectional view showing a molding method for the sameopening trim;

[0045]FIG. 6 is a sectional view showing an opening trim of the secondembodiment;

[0046]FIG. 7 is a sectional view showing an opening trim of the thirdembodiment;

[0047]FIG. 8 is a perspective view showing an opening trim of the forthembodiment seen from the outer peripheral side of its sealing portion inwhich a cutout long hole and cuts are made;

[0048]FIG. 9 is a front view showing the same opening trim;

[0049]FIG. 10 is a perspective view showing an opening trim of the fifthembodiment seen from the outer peripheral side of its sealing portion inwhich a cutout long hole and a cut are made;

[0050]FIG. 11 is a front view showing the same opening trim;

[0051]FIG. 12 is a perspective view of the same opening trim seen fromits back side;

[0052]FIG. 13 is a sectional view taken along the line XIII-XIII of FIG.11;

[0053]FIG. 14 is a perspective view showing an opening trim of the sixthembodiment seen from the outer peripheral side of its sealing portion inwhich a cutout long hole is made;

[0054]FIG. 15 is a front view showing the same opening trim from itsfront side;

[0055]FIG. 16 is a perspective view showing the same opening trim seenfrom the outer peripheral side of its sealing portion;

[0056]FIG. 17 is a sectional view taken along the line XVII-XVII of FIG.15;

[0057]FIG. 18 is a perspective view showing an opening trim of theseventh embodiment seen from the outer peripheral side of its sealingportion in which cuts are made;

[0058]FIG. 19 is a front view showing the same opening trim from itsfront side;

[0059]FIG. 20 is a perspective view showing an opening trim of theeighth embodiment seen from the outer peripheral side of its sealingportion in which a cut is made;

[0060]FIG. 21 is a front view showing the same opening trim from itsfront side;

[0061]FIG. 22 is a perspective view showing another opening trim seenfrom the outer peripheral side of its sealing portion in which a cut ismade;

[0062]FIG. 23 is a schematic diagram of an automobile to which anopening trim is attached;

[0063]FIG. 24 is a front view of a conventional opening trim from whicha sealing portion is cut off;

[0064]FIG. 25 is a front view of the same opening trim after a moldedpart is formed;

[0065]FIG. 26 is a front view of the part A in FIG. 30 showing anopening trim of the ninth embodiment;

[0066]FIG. 27 is a perspective view of the same opening trim seen fromits back side;

[0067]FIG. 28 is a sectional view taken along the line XXVIII-XXVIII ofFIG. 26;

[0068]FIG. 29 is a sectional view as same as FIG. 28 showing a modifiedexample of the same opening trim;

[0069]FIG. 30 is a side view of an automobile to which an opening trimis attached;

[0070]FIG. 31 is a front view of a conventional opening trim;

[0071]FIG. 32 is a sectional view taken along the line XXXII-XXXII ofFIG. 31;

[0072]FIG. 33 is a schematic diagram showing a curved corner section ofthe same opening trim; and

[0073]FIG. 34 is a schematic diagram showing the curved corner sectionwhich almost recovers its straight shape.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0074] Description will now be made of opening trims embodying theinvention with reference to Figs.. The first to ninth embodiments aremainly employed for attaining the above-mentioned objects.

First Embodiment

[0075] FIGS. 1 to 5 show an opening trim 11 of the first embodiment anda method for forming a corner section thereof. The opening trim 11 ismainly composed of an extruded product (body) 12. The extruded product12 is formed by common extrusion from an EPDM (ethylene-propylene-dienecopolymer) solid rubber, which forms an attachment portion (trimportion) 13 having a U-shaped cross-section and a lip portion 15 havinga tongue-shaped cross-section, and an EPDM sponge rubber, which forms ahollow sealing portion 14 (concretely, it has a “C” loop-shapedcross-section). The attachment portion 13 has a metal reinforcing insert16 embedded therein. The sealing portion 14 is connected to theattachment portion 13 at both ends of the loop. As shown in FIGS. 3 and23, the attachment portion 13 is attached to a flange 2 of a dooropening peripheral edge of an automobile body 1, the sealing portion 14seals a gap between the body 1 and a door panel 3 when the door panel 3is closed, and the lip portion 15 covers an edge of an interior member(not shown) such as a garnish installed in the automobile interior onthe other side of the sealing portion 14 to seal a gap between the body1 and the interior member.

[0076] Since the opening trim 11 is required to be curved along a cornerof the door opening peripheral edge, it has a corner section C whichcurves between straight sections S, S. This curved shape of the cornersection C has to be maintained. In order to expand the sealing area ofthe corner section C toward its outer periphery in accordance with thecorner shape of the door panel 3, the sealing portion of the cornersection C is required to project toward the outer periphery of thecorner section C. Construction of the corner section C will be describedin detail by the following forming process.

[0077] (1) First of all, the sealing portion 14 is cut to make a linearincision slit 19 provided on a loop edge 17 on the outer periphery ofthe corner section C to thereby form an incision edge 14 b on the outerperiphery of the sealing portion 14, as shown in FIGS. 3 (see doubledashed lines) and 4. Furthermore, as shown in FIGS. 1, 2 and 4, cuts 18,18 are made in the sealing portion 14, which run from the incision edge14 b toward the inner periphery of the corner section C in the vicinityof both ends of the incision slit 19 (in the vicinity of each boundarybetween the corner section C and the straight sections S, S) to therebyform a

-shaped incision fin 14 a.

[0078] (2) With the attachment portion 13 and the incision fin 14 abeing curved as shown in FIGS. 1 and 2, and with the incision edge 14 bbeing spread out to project toward the outer periphery of the cornersection C as shown by an arrow in FIG. 3, the extruded product 12 is setin a mold 20 as shown in FIG. 5. The mold 20 comprises a lower moldportion 21, a first middle mold portion 22 which enters the attachmentportion 13 to support it, a second middle mold portion 23 which supportsthe outer surface of the incision fin 14 a, a third middle mold portion24 which enters the incision fin 14 a, and an upper mold portion 25. Acavity 26 is formed between the thus-set incision fin 14 a and thirdmiddle mold portion 24.

[0079] (3) An EPDM sponge rubber material is injected through a gate 27(see FIG. 5) into a region in the vicinity of the outer surface of theattachment portion 13 which faces the back side of the incision edge 14b of the incision fin 14 a. Flowing along the back side of the incisionfin 14 a from the inner periphery of the corner section C toward theouter periphery thereof, the material is foamed and fills the cavity 26.As a result, a molded part 30 for maintaining the curved shape of thecorner section C is formed along the outer surface of the attachmentportion 13 and the entire back side of the incision fin 14 a, and insidethe cuts 18, 18 which are expanded by the above described curvedtransformation of the opening trim 11. In FIG. 1, cross-hatching linesare shown only to make the range of the molded part 30 clear (it is thesame in FIGS. 9, 11, 15, 16, 19 and 21 where other embodiments areshown). Though the thickness of the molded part 30 is not specificallylimited, 0.5 to 3 mm is preferable, and 1 to 2 mm is more preferable. Asfor this embodiment, the thickness is 1.2 mm on the average though itdepends on the position.

[0080] In this embodiment, the molded part 30 is not only formed on theentire back side of the incision fin 14 a, but also formed to projectfrom the spread incision edge 14 b toward the outer periphery of thecorner section C. Accordingly, this embodiment is suitably employed whenspreading out the incision edge 14 b is insufficient to expand thesealing area of the corner section C toward its outer periphery inaccordance with the corner shape of the door panel 3. A flangeprojection 32 is formed on the outer most portion of the molded part 30.

[0081] Moreover, two ribs are integrally provided on the molded part 30formed on the back side of the incision fin 14 a, and extend in thedirection where the corner section C curves along. The ribs reinforcethe rigidity of the molded part 30, and serves to maintain the curvedshape of the corner section C.

[0082] Unlike the conventional weather strip (opening trim) wherein themajority of the sealing portion in the corner section is cut off,according to the opening trim 11 of the present embodiment as describedabove, the sealing portion 14 is remaining as the

-shaped incision fin 14 a, and the incision edge 14 b is spread out toproject toward the outer periphery of the corner section C. As a result,the extruded sealing portion 14 (including the incision fin 14 a) isshown (appears on the surface) as much as possible. To the contrary, themolded part 30 appears on the surface as less as possible except that itis slightly seen inside the cuts 18, 18 and seen in a place whichprojects from the spread incision edge 14 b. Therefore, the opening trim11 of the present embodiment can provide an uniform luster on itssurface. The weather strip can hardly make a borderline between theextruded sealing portion 14 (including incision fin 14 a) and the moldedpart 30 to see, thereby remarkably improving the appearance.

[0083] Moreover, since the majority of the extruded sealing portion 14having a good durability appears on the surface of the opening trim 11,the durability in the corner section C can also be improved. When a venthole (not shown) is made for the sealing portion 14, it can be buriedfrom the back side of the incision fin 14 a.

[0084] It is possible to set the molding material injected from theabove-mentioned gate 27 (see FIG. 5) to flow along the back side of theincision fin 14 a in the direction as shown by double dashed lines inFIG. 1 and to reach final positions on the outer periphery of the cornersection C in the vicinity of each boundary between the corner section Cand the straight sections S, S. It is also possible to provide a tab 28on the outer periphery of each final position so as to prevent the airfrom remaining. After the opening trim is molded, the tabs 28 and a gateburr are cut off.

Second Embodiment

[0085] Next, FIG. 6 shows an opening trim 11 of the second embodiment.The opening trim 11 is different from that of the first embodiment onlyin a point that a molded part 30 is formed within the range of the backside of the incision fin 14 a so as not to project from the spreadincision edge 14 b toward the outer periphery of the corner section C.This embodiment is suitably employed when spreading out the incisionedge 14 b is sufficient to expand the sealing area of the corner sectionC toward its outer periphery in accordance with the corner shape of thedoor panel 3, and it has the advantage of being able to hardly show themolded part 30.

Third Embodiment

[0086] Next, FIG. 7 shows an opening trim 11 of the third embodiment.The opening trim 11 is different from that of the first embodiment inpoints that a molded part 30 is formed only in the vicinity of theincision edge 14 b on the back side of the incision fin 14 a, in a placewhich projects from the incision edge 14 b toward the outer periphery ofthe corner section C, and inside the cuts 18, 18 which are expanded bythe curved transformation of the opening trim 11, and that the rib 31 isomitted. To the contrary with the first embodiment, the molded part 30of this embodiment is formed by injecting a molding material through agate 27 a shown by broken lines in FIG. 5 into a region in the vicinityof the back side of the incision edge 14 b so as it to flow along theback side of the incision fin 14 a from the outer periphery of thecorner section C toward the inner periphery thereof. Since the change inthe rigidity between the corner section C and the straight section S canbe reduced compared with the case where the molded part 30 is formed onthe entire back side of the incision fin 14 a, the load which is appliedto the door panel 3 is not extremely changed according to the presentembodiment.

[0087] This embodiment can be modified so as the molded part 30 not toproject from the spread incision edge 14 b toward the outer periphery ofthe corner section C.

[0088] This embodiment can also be modified by setting the moldingmaterial injected from the above-mentioned gate 27 a to flow on theentire back side of the incision fin 14 a in the direction as shown bydouble dashed lines in FIG. 1 and to reach final positions on the outerperiphery of the corner section C in the vicinity of each boundarybetween the corner section C and the straight sections S, S. It is alsopossible to provide a tab 28 on the outer periphery of each finalposition so as to prevent the air from remaining. After the opening trimis molded, the tabs 28 and a gate burr are cut off.

Forth Embodiment

[0089] Next, FIGS. 8 and 9 show an opening trim 11 of the forthembodiment. The opening trim 11 is different from that of the firstembodiment in the following points. Namely, the incision slit 19 isreplaced with a cutout long hole 33 formed by cutting out a part of thesealing portion 14 which is on the outer periphery of the corner sectionC and not seen from the front side (the part is shown in FIG. 8 whichshows the sealing portion 14 seen from the outer side, while it is notshown in FIG. 9 which shows the sealing portion 14 seen from the frontside). A cutout edge 14 c of the sealing portion 14 is formed along thelong hole 33, and a round hole 18 a is formed at the end of each cut 18.Each end of the cutout long hole 33 forms a semicircle.

[0090] After the cutout edge 14 c is formed by providing the cutout longhole 33 and the cuts 18 on the sealing portion 14 as shown in FIG. 8,the cutout edge 14 c is curved as described in the first embodiment andspread out to project toward the outer periphery of the corner sectionC. Then, as shown in FIG. 9, a molded part 30 for maintaining the curvedshape of the corner section C is formed on the outer surface of theattachment portion 13, on the back side of the incision fin 14 a, in aplace which projects from the cutout edge 14 c toward the outerperiphery of the corner section C, and inside the expanded cuts 18.Since stress concentration in ends of the cutout long hole 33 and cuts18, which occurs when the incision fin 14 a is spread out, is improvedaccording to the present embodiment, the opening trim 11 of the presentembodiment is prevented from splitting at these ends.

Fifth embodiment

[0091] Next, FIGS. 10 to 13 show an opening trim 11 of the fifthembodiment. The opening trim 11 is different from that of the thirdembodiment in the following points. Namely, the incision slit 19 isreplaced with a cutout long hole 33 formed by cutting out a part of thesealing portion 14 which is on the outer periphery of the corner sectionC and not seen from the front side. A cutout edge 14 c of the sealingportion 14 is formed along the cutout long hole 33. A cut 18 is madeonly in a place at the center of the corner portion C, and a round hole18 a is formed at the end of the cut 18.

[0092] After the cutout edge 14 c is formed by providing the cutout longhole 33 and the cut 18 on the sealing portion 14 as shown in FIG. 10,the cutout edge 14 c is curved as described in the first embodiment andspread out to project toward the outer periphery of the corner sectionC. Then, as shown in FIGS. 11 to 13, a molded part 30 for maintainingcurved shape of the corner section C is formed in the of the cutout edge14 c on the back side of the incision fin 14 a, and inside the expandedcut 18.

[0093] This embodiment can be modified as shown by double dashed linesin FIG. 13 so as the molded part 30 to be formed along the entire backside of the incision fin 14 a and the entire outer surface of theattachment portion 13. The molded part 30 may not be formed over toproject from the spread cutout edge 14 c toward the outer periphery ofthe corner section C.

Sixth embodiment

[0094] Next, FIGS. 14 to 17 show an opening trim 11 of the sixthembodiment. The opening trim 11 is different from that of the thirdembodiment in the following points. Namely, the incision slit 19 isreplaced with a cutout long hole 33 formed by cutting out a part of thesealing portion 14 which is on the outer periphery of the corner sectionC and not seen from the front side. A cutout edge 14 c of the sealingportion 14 is formed along the cutout long hole 33, and no cut is made.Both ends of the cutout long hole 33 of the present embodiment reach thestraight sections S, S over the corner section C.

[0095] After the cutout edge 14 c is formed by providing the cutout longhole 33 on the sealing portion 14 as shown in FIG. 14, the cutout edge14 c is curved as described in the first embodiment and spread out toproject toward the outer periphery of the corner section C. Then, asshown in FIGS. 15 to 17, a molded part 30 for maintaining the curvedshape of the corner section C is formed in the vicinity of the cutoutedge 14 c on the back side of the sealing portion 14, in both ends ofthe cutout long hole 33 which are expanded by the above described spreadof the cutout edge 14 c, and only on the outer periphery of the outersurface of the attachment portion 13. An EPDM solid rubber material isused for the molded part 30 of the present embodiment to firmly maintainthe curved shape of the corner section C.

[0096] This embodiment can be modified as shown by double dashed linesin FIG. 17 so as the molded part 30 to be formed along the entire backof the sealing portion 14 and the entire outer surface of the attachmentportion 13. The molded part 30 may not be formed over to project fromthe spread cutout edge 14 c toward the outer periphery of the cornersection C.

[0097] This embodiment can also be modified by enlarging the width ofthe cutout long hole 33 by cutting out all part of the sealing portion14 which is on the outer periphery of the corner section C and not seenfrom the front side, as shown by double dashed lines in FIGS. 14-16.With this modification, an arbitrary position of the extruded productcan be used as the corner section C without considering the position ofa vent hole (not shown) made on the sealing portion 14 of the extrudedproduct.

Seventh embodiment

[0098] Next, FIGS. 18 and 19 show an opening trim 11 of the seventhembodiment. The opening trim 11 is different from that of the firstembodiment in a point that the hollow sealing portion 14 is replacedwith a lip-shaped sealing portion 37. The sealing portion 37 isconnected to the attachment portion 13 at one end with the other endthereof being free. Since the other free end (which is not connected tothe attachment portion 13) of the sealing portion 37 is located on theouter periphery of the corner section C to serve as a free edge 37 b,there is no need to make an incision slit.

[0099] As shown in FIG. 18, cuts 18, 18 are made in the sealing portion37, which run from the free edge 37 b toward the inner periphery of thecorner section C in the vicinity of each boundary between the cornersection C and the straight sections S, S to thereby form a

-shaped free fin 37 a. The attachment portion 13 and the sealing portion37 are curved as described in the first embodiment, and the free edge 37b is spread out to project toward the outer periphery of the cornersection C. Then, as shown in FIG. 19, a molded part 30 for maintainingthe curved shape is formed along the entire outer surface of theattachment portion 13 and the entire back side of the free fin 37 a, andinside the cuts 18, 18 which are expanded by the above described curvedtransformation of the opening trim 11.

[0100] This embodiment can be modified so as the molded part 30 to beformed only in the vicinity of the free edge 37 b on the back of thesealing portion 37 or not to project from the spread free edge 37 btoward the outer periphery of the corner section C.

Eighth embodiment

[0101] Next, FIGS. 20 and 21 show an opening trim 11 of the eighthembodiment. The opening trim 11 is different from that of the thirdembodiment in the following points. Namely, the hollow sealing portion14 is replaced with a lip-shaped sealing portion 37 which is connectedto the attachment portion 13 at one end with the other end thereof beingfree. A cut 18 is made only in a place at the center of the cornerportion C, and a round hole 18 a is formed at the end of the cut 18.Since the other free end (which is not connected to the attachmentportion 13) of the sealing portion 37 is located on the outer peripheryof the corner section C to serve as a free edge 37 b, there is no needto make an incision slit.

[0102] As shown in FIG. 20, the cut 18 is made in the sealing portion37, which run from the free edge 37 b toward the inner periphery of thecorner section C in the vicinity of the center of the corner section C.The attachment portion 13 and the sealing portion 37 are curved asdescribed in the first embodiment and the free edge 37 b is spread outto project toward the outer periphery of the corner section C. Then, asshown in FIG. 21, a molded part 30 for maintaining the curved shape isformed only in the vicinity of the free edge 37 b on the back side ofthe free fin 37 a, and inside the cut 18 which is expanded by the abovedescribed curved transformation of the opening trim 11.

[0103] This embodiment can be modified so as the molded part 30 to beformed along the entire back side of the free fin 37 a and the entireouter surface of the attachment portion 13. The molded part 30 may notbe formed over to project from the spread free edge 37 b toward theouter periphery of the corner section C.

[0104] As for such an opening trim 11 having a lip-shaped sealingportion 37 which is connected to the attachment portion 13 at one endwith the other end thereof being free, as exemplified in the seventh oreighth embodiment, it is necessary to make at least one cut in thesealing portion 37. If the free edge 37 b is spread out without makingany cuts, which will influence the cross-section of the sealing portion37 in the extruded straight section S, too (especially, thecross-section of the other free end which is not connected to theattachment portion 13).

[0105] On the other hand, as for such an opening trim 11 having a hollowsealing portion 14 which is connected to the attachment portion 13 atboth ends, as exemplified in the sixth embodiment, it is not alwaysnecessary to make cuts in the sealing portion 14. This is because thecross-section of the sealing portion 14 in the straight section S, whichis connected to the attachment portion 13 at both ends, is notinfluenced easily even if the cutout edge 14 c (or the incision edge 14b) is spread out.

[0106] It is to be understood that the foregoing description of thestructure with reference to the first to eighth embodiments is notintended for limiting the scope of this invention, but that variationsor modifications may be made without departing from the scope and spiritof this invention. The following is a brief description of severalexamples of such modifications.

[0107] (1) The depth of the cut 18 may be properly changed. It may bedeeper or shallower than that shown in each Fig.

[0108] (2) The rib 31 may be properly changed in its size, shape or thenumber. It is also possible to increase the thickness of the molded part30 to omit the rib 31.

[0109] (3) The flange projection 32 may be omitted.

[0110] (4) The lip portion 15 may be omitted.

[0111] (5) A rib may be provided on the outer surface of the attachmentportion 13.

[0112] (6) This invention may be applied to an opening trim which isattached to an engine hood or a trunk of an automobile, or a weatherstrip which is attached to an open and closed panel such as a side doorpanel, a hatchback door panel, and a trunk panel.

[0113] (7) The attachment portion 13 and sealing portions 14, 37 may bechanged in their concrete shapes depending on places where they areapplied. For example, it is possible to change the sealing portion 37 ofthe seventh embodiment into a sealing portion 38 having a V-shapedcross-section, which is attached to the attachment portion 13 at onlyone end, as shown in FIG. 22.

[0114] (8) The only difference between the incision slit 19 and thecutout long hole 33 is that the latter is formed by cutting out a partof the sealing portion 14 while the former is formed without cuttingout. Therefore, they are mutually substitutable. For example, theincision slit 19 of the first to third embodiment may be replaced with acutout long hole 33 while the cutout long hole 33 of the fourth to sixthembodiment may be replaced with an incision slit 19. In a case that acutout edge is formed by making a cutout long hole 33, the cutout edgemay not be spread out.

Ninth embodiment

[0115] Description will now be made of an opening trim embodying theinvention with reference to FIGS. 26 to 30, which is attached to a dooropening peripheral edge of a front side door of an automobile body 101and seals a gap between the body 101 and a door panel 103 when the doorpanel 103 is closed, as shown in FIG. 30.

[0116] FIGS. 26 to 28 show an opening trim 111 of the ninth embodiment.The opening trim 111 is mainly composed of an extruded rubber product(body) 112 except for a molded part. The extruded rubber product 112 isformed by common extrusion from an EPDM solid rubber, which forms aU-shaped attachment portion (trim portion) 113 and a lip portion 115,and an EPDM sponge rubber, which forms a hollow sealing portion 114. Theattachment portion 113 has a reinforcing insert 125 having a U-shapedcross-section. The attachment portion 113 has a cover layer 124 extrudedfrom a coloring TPE for surface decoration, which extends from theboundary with the sealing portion 114 of the attachment portion 113 tothe back side of the lip portion 115 via its tip edge. The attachmentportion 113 is attached to a flange 102 of a door opening peripheraledge of the automobile body 101, the sealing portion 114 seals a gapbetween the body 101 and the door panel 103, and the lip portion 115covers an edge of an interior member such as a garnish installed in theautomobile interior on the other side of the sealing portion 114 to seala gap between the body 101 and the interior member.

[0117] At a corner section 112 a (a curved part between a horizontalstraight part and a vertical straight part) which is to be curved alongthe door opening peripheral edge, a molded part 117 having a projectingpart is provided. In order to form the molded part 117, the sealingportion 114 in the corner section 112 a is first cut off in a length ofabout 50 to 100 mm remaining its inner and outer peripheral parts 114 aand 114 b. These parts 114 a and 114 b form inner and outer peripheriesof the extruded rubber product 112 when the product 112 is curved,respectively. Then, the corner section 112 a of the extruded rubberproduct 112 is curved and the product 112 is set in a metal mold whichis not heated and composed of split molds and a core (this metal moldhas a cavity for forming the molded part 117 and a cavity for forming arecovery preventing portion 123). Next, a soft TPE material is injectedinto the metal mold to form the curved molded part 117 which issubstituted for the cut off part of the sealing portion 114 andconnected to the remaining inner peripheral part 114 a. Simultaneously,a belt-shaped bridge 122 is formed between the tip of the squarish outeredge of the projecting part of the molded part 117, which extends towardthe outer peripheral side over the outer peripheral outline of theattachment portion 113, and the attachment portion 113. Both ends of thebridge 122 are connected to the tip and the attachment portion 113,respectively.

[0118] The cross-section of the molded part 117 in its both ends almostcorresponds to that of the outer peripheral part 114 b of the cut offsealing portion 114, while the cross-section of the molded part 117 onits center is squarish on the outer periphery to serve as the projectingpart in accordance with the corner shape of the door opening peripheraledge. On the back side of the squarish part, both sides of the bridge 22open apart from the attachment portion 113.

[0119] After the molded part 117 is formed, the recovery preventingportion 123 is molded from a hard resin derived from polyolefin such asa polyethylene and polypropylene by an injection molding. The recoverypreventing portion 123 is formed on a surface of the attachment portion13, which faces the back side of the lip portion 115, extending in theperipheral direction of the corner section 112 a.

[0120] Although the region where the recovery preventing portion 123 isformed is not specifically limited, it is effective in preventingrecovery to form the recovery preventing portion 123 to have a widthparallel to a sidewall of the attachment portion 113. For instance, itis possible to form the recovery preventing portion 123 on the innersurface of the U-shaped attachment portion 113 as shown in FIG. 29. Inthis case, a width parallel to a sidewall of the attachment portion 113is highly effective in preventing recovery, while a width parallel to aconnecting wall which connects both sidewalls of the attachment portion113 is not so effective. As shown by double dashed lines in FIG. 29, itis also possible to attach a separately molded recovery preventingportion 123 to an outer surface of the attachment portion 113, which isappeared outside by the cut off of the sealing portion 114.

[0121] The opening trim 111 as described above can prevent the curvedcorner section 112 a from recovering its straight shape by the shaperecovery force of the insert 156 since it has the recovery preventingportion 123. Accordingly, different from a conventional opening trim, itcan be easily assembled onto an automobile body by operators withoutcurving the corner section again with their hands.

[0122] The recovery preventing portion 123 also serves to preventtransformation of the molded part 117 due to the recovery of thestraight shape of the corner section 112 a, thereby improving a sealingability and an appearance of the molded part 117.

[0123] Since a TPE material and not a rubber material, which needsheating for its vulcanization, was used as a material for the moldedpart 117, a general metal mold for resins, which does not need heating,can be used. Therefore, it is possible to form the recovery preventingportion 123 from a hard resin by an injection molding almostsimultaneously with the molding of the molded part 117. Accordingly,manufacturing processes are not greatly increased by the provision ofthe recovery preventing portion 123.

[0124] Furthermore, since a non-heated metal mold can be used to formthe molded part 117, the conventional problem that the surface of thecover layer 124 melts does not occur at all. As a result, the innerperipheral part 114 a of the sealing portion 114 can remain as narrow aspossible, so that the boundary where the inner peripheral part 114 aconnects with the molded part 117 is hardly seen from outside, whichimproves the appearance.

[0125] Moreover, the bridge 122 supports the projecting part of themolded part 117, which prevents the projecting part from turning over orswaying by the open and closed of the door panel or its ageddeterioration, thereby improving the sealing ability and appearance.

[0126] It is to be understood that the foregoing description of thestructure with reference to the ninth embodiment is not intended forlimiting the scope of this invention, but that variations ormodifications may be made without departing from the scope and spirit ofthis invention. The following is a brief description of a few examplesof such modifications.

[0127] (1) This invention may be applied to another corner sectiondifferent from the above-embodied corner section of the opening trim.

[0128] (2) This invention may be applied to an opening trim which isattached to an engine hood or a trunk of an automobile. The attachmentportion and sealing portion may be changed in their concrete shapesdepending on the place where they are applied.

[0129] (3) The TPE covering as the cover layer may be changed to a clothcovering.

[0130] As many apparently widely different embodiments of this inventionmay be made without departing from the spirit and scope thereof, it isto be understood that the invention is not limited to the specificembodiments thereof except as defined in the appended claims.

What is claimed is:
 1. A weather strip comprising an extruded bodyhaving straight sections and a corner section curving therebetween, saidextruded body comprising an attachment portion and a hollow sealingportion integrally formed by an extrusion molding, said attachmentportion being attached to a part of an automobile and said sealingportion being connected to said attachment portion at both ends, whereinsaid weather strip comprises: an incision slit made on the outerperiphery of said sealing portion in said corner section; an incisionedge formed on said sealing portion along said incision slit, saidincision edge being spread out toward the outer periphery of said cornersection with said attachment portion and sealing portion being curvedalong a corner shape of said part of said automobile; and a molded partformed at least in the vicinity of said incision edge on the back sideof said sealing portion in said corner section.
 2. A weather stripcomprising an extruded body having straight sections and a cornersection curving therebetween, said extruded body comprising anattachment portion and a hollow sealing portion integrally formed by anextrusion molding, said attachment portion being attached to a part ofan automobile and said sealing portion being connected to saidattachment portion at both ends, wherein said weather strip comprises: acutout long hole made by cutting out at least a part of said sealingportion which is on the outer periphery of said corner section and notseen from the front side; a cutout edge formed on said sealing portionalong said cutout long hole, said attachment portion and sealing portionbeing curved along a corner shape of said part of said automobile; and amolded part formed at least in the vicinity of said cutout edge on theback side of said sealing portion in said corner section and in a placewhich projects from said cutout edge toward the outer periphery of saidcorner section.
 3. A weather strip comprising an extruded body havingstraight sections and a corner section curving therebetween, saidextruded body comprising an attachment portion and a lip-shaped sealingportion integrally formed by an extrusion molding, said attachmentportion being attached to a part of an automobile and said sealingportion being connected to said attachment portion at one end with theother end thereof being free, wherein said weather strip comprises: afree edge formed by locating the other end of said sealing portion onthe outer periphery of said corner section; at least one cut made insaid sealing portion from said free edge toward the inner periphery ofsaid corner section, said free edge being spread out toward the outerperiphery of said corner section with said attachment portion andsealing portion being curved along a corner shape of said part of saidautomobile; and a molded part formed at least in the vicinity of saidfree edge on the back side of said sealing portion in said cornersection and inside said cut which is expanded by the curvedtransformation of said sealing portion.
 4. A weather strip as set forthin claim 1, wherein at least one cut is made in said sealing portionfrom said incision edge toward the inner periphery of said cornersection, and said molded part is further formed inside said cut which isexpanded by the curved transformation of said sealing portion.
 5. Aweather strip as set forth in claim 1, wherein each end of said incisionslit undergoes a rounding finish.
 6. A weather strip as set forth inclaim 1, wherein said molded part is not formed over to project fromsaid spread incision edge toward the outer periphery of said cornersection.
 7. A weather strip as set forth in claim 1, wherein said moldedpart is further formed in a place which projects from said spreadincision edge toward the outer periphery of said corner section.
 8. Aweather strip as set forth in claim 1, wherein at least one rib isintegrally formed on the back side of said molded part, extending in thedirection where said corner section curves along.
 9. A weather strip asset forth in claim 1, wherein said molded part is formed by injecting amolding material into a region in the vicinity of the outer surface ofsaid attachment portion which faces the back side of said incision edgein the center of said corner section so as it to flow along the backside of said sealing portion from the inner periphery toward the outerperiphery of said corner section.
 10. A weather strip as set forth inclaim 1, wherein said molded part is formed by injecting a moldingmaterial into a region in the vicinity of the back side of said incisionedge in the center of said corner section so as it to flow along theback side of said sealing portion from the outer periphery toward theinner periphery of said corner section.
 11. A weather strip as set forthin claim 2, wherein at least one cut is made in said sealing portionfrom said cutout edge toward the inner periphery of said corner section,and said molded part is further formed inside said cut which is expandedby the curved transformation of said sealing portion.
 12. A weatherstrip as set forth in claim 2, wherein each end of said cutout long holeundergoes a rounding finish.
 13. A weather strip as set forth in claim2, wherein at least one rib is integrally formed on the back side ofsaid molded part, extending in the direction where said corner sectioncurves along.
 14. A weather strip as set forth in claim 2, wherein saidmolded part is formed by injecting a molding material into a region inthe vicinity of the outer surface of said attachment portion which facesthe back side of said cutout edge in the center of said corner sectionso as it to flow along the back side of said sealing portion from theinner periphery toward the outer periphery of said corner section.
 15. Aweather strip as set forth in claim 2, wherein said molded part isformed by injecting a molding material into a region in the vicinity ofthe back side of said cutout edge in the center of said corner sectionso as it to flow along the back side of said sealing portion from theouter periphery toward the inner periphery of said corner section.
 16. Aweather strip as set forth in claim 3, wherein said cut is made in saidsealing portion in the vicinity of each boundary between said cornersection and said straight sections.
 17. A weather strip as set forth inclaim 3, wherein said cut is made in said sealing portion in the middleof said corner section.
 18. A weather strip as set forth in claim 3,wherein the end of said cut undergoes a rounding finish.
 19. A weatherstrip as set forth in claim 3, wherein said molded part is not formedover to project from said spread free edge toward the outer periphery ofsaid corner section.
 20. A weather strip as set forth in claim 3,wherein said molded part is further formed in a place which projectsfrom said spread free edge toward the outer periphery of said cornersection.
 21. A weather strip as set forth in claim 3, wherein at leastone rib is integrally formed on the back side of said molded part,extending in the direction where said corner section curves along.
 22. Aweather strip as set forth in claim 3, wherein said molded part isformed by injecting a molding material into a region in the vicinity ofthe outer surface of said attachment portion which faces the back sideof said free edge in the center of said corner section so as it to flowalong the back side of said sealing portion from the inner peripherytoward the outer periphery of said corner section.
 23. A weather stripas set forth in claim 3, wherein said molded part is formed by injectinga molding material into a region in the vicinity of the back side ofsaid free edge in the center of said corner section so as it to flowalong the back side of said sealing portion from the outer peripherytoward the inner periphery of said corner section.
 24. A weather stripas set forth in claim 4, wherein said cut is made in said sealingportion in the vicinity of each boundary between said corner section andsaid straight sections.
 25. A weather strip as set forth in claim 4,wherein said cut is made in said sealing portion in the middle of saidcorner section.
 26. A weather strip as set forth In claim 4, whereineach end of said incision slit undergoes a rounding finish.
 27. Aweather strip as set forth in claim 4, wherein the end of said cutundergoes a rounding finish.
 28. A weather strip as set forth in claim11, wherein said cut is made in said sealing portion in the vicinity ofeach boundary between said corner section and said straight sections.29. A weather strip as set forth in claim 11, wherein said cut is madein said sealing portion in the middle of said corner section.
 30. Aweather strip as set forth in claim 11, wherein each end of said cutoutlong hole undergoes a rounding finish.
 31. A weather strip as set forthin claim 11, wherein the end of said cut undergoes a rounding finish.32. A weather strip comprising an extruded body having straight sectionsand a corner section curving therebetween, said extruded body comprisingan attachment portion and a sealing portion integrally formed by anextrusion molding, said attachment portion being attached to a part ofan automobile, said sealing portion sealing a gap between an openingperipheral edge of said automobile and an open and closed panel, saidsealing portion being cut off in a curved corner section, and a curvedmolded part being formed in place of the cut off part, wherein saidmolded part is formed from a soft thermoplastic elastomer, and arecovery preventing portion is formed on said attachment portion by aninjection molding from a hard resin, said recovery preventing portionextending in the peripheral direction of said corner section.
 33. Aweather strip as set forth in claim 32, wherein said molded partcomprises a projecting part extending toward the outer peripheral sideover the outer peripheral outline of said attachment portion, and abelt-shaped bridge connecting the outer edge of said projecting part andsaid attachment portion.